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5-[(Z)-[(5E)-5-[[5-[(Z)-(3,4-diethyl-5-oxo-pyrrol-2-ylidene)methyl]-3,4-diethyl-1H-pyrrol-2-yl]methylene]-3,4-diethyl-pyrrol-2-ylidene]methyl]-3,4-diethyl-pyrrol-2-one related products: